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DNA is a molecule that contains the instructions an organism needs to develop, live, and reproduce. It is made up of two long strands forming a double helix carrying genetic information.
A segment of DNA that contains the code for producing specific proteins, functioning as units of heredity.
A long, organized structure of DNA and protein found in cells that holds many genes.
Nucleotide: The basic building block of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base